Golang C.Log方法代码示例

func (s *GitDeploySuite) TestCancel(t *c.C) {
	r := s.newGitRepo(t, "cancel-hang")
	t.Assert(r.flynn("create", "cancel-hang"), Succeeds)
	t.Assert(r.flynn("env", "set", "FOO=bar", "BUILDPACK_URL=https://github.com/kr/heroku-buildpack-inline"), Succeeds)

	// start watching for slugbuilder events
	watcher, err := s.controllerClient(t).WatchJobEvents("cancel-hang", "")
	t.Assert(err, c.IsNil)

	// start push
	cmd := exec.Command("git", "push", "flynn", "master")
	// put the command in its own process group (to emulate the way shells handle Ctrl-C)
	cmd.SysProcAttr = &syscall.SysProcAttr{Setpgid: true}
	cmd.Dir = r.dir
	var stdout io.Reader
	stdout, _ = cmd.StdoutPipe()
	cmd.Stderr = cmd.Stdout
	out := &bytes.Buffer{}
	stdout = io.TeeReader(stdout, out)
	err = cmd.Start()
	t.Assert(err, c.IsNil)

	done := make(chan struct{})
	go func() {
		select {
		case <-done:
		case <-time.After(30 * time.Second):
			cmd.Process.Signal(syscall.SIGTERM)
			cmd.Wait()
			t.Fatal("git push timed out")
		}
	}()

	// wait for sentinel
	sc := bufio.NewScanner(stdout)
	found := false
	for sc.Scan() {
		if strings.Contains(sc.Text(), "hanging...") {
			found = true
			break
		}
	}
	t.Log(out.String())
	t.Assert(found, c.Equals, true)

	// send Ctrl-C to git process group
	syscall.Kill(-cmd.Process.Pid, syscall.SIGINT)
	t.Assert(err, c.IsNil)
	go io.Copy(ioutil.Discard, stdout)
	cmd.Wait()
	close(done)

	// check that slugbuilder exits immediately
	err = watcher.WaitFor(ct.JobEvents{"slugbuilder": {ct.JobStateUp: 1, ct.JobStateDown: 1}}, 10*time.Second, nil)
	t.Assert(err, c.IsNil)
}

func (s *TaffyDeploySuite) deployWithTaffy(t *c.C, app *ct.App, env, meta, github map[string]string) {
	client := s.controllerClient(t)

	taffyRelease, err := client.GetAppRelease("taffy")
	t.Assert(err, c.IsNil)

	args := []string{
		"/bin/taffy",
		app.Name,
		github["clone_url"],
		github["branch"],
		github["rev"],
	}

	for name, m := range map[string]map[string]string{"--env": env, "--meta": meta} {
		for k, v := range m {
			args = append(args, name)
			args = append(args, fmt.Sprintf("%s=%s", k, v))
		}
	}

	rwc, err := client.RunJobAttached("taffy", &ct.NewJob{
		ReleaseID:  taffyRelease.ID,
		ReleaseEnv: true,
		Args:       args,
		Meta: map[string]string{
			"github":      "true",
			"github_user": github["user"],
			"github_repo": github["repo"],
			"branch":      github["branch"],
			"rev":         github["rev"],
			"clone_url":   github["clone_url"],
			"app":         app.ID,
		},
		Env: env,
	})
	t.Assert(err, c.IsNil)
	attachClient := cluster.NewAttachClient(rwc)
	var outBuf bytes.Buffer
	exit, err := attachClient.Receive(&outBuf, &outBuf)
	t.Log(outBuf.String())
	t.Assert(exit, c.Equals, 0)
	t.Assert(err, c.IsNil)
}

func (s *HostSuite) TestNotifyOOM(t *c.C) {
	appID := random.UUID()

	// subscribe to init log messages from the logaggregator
	client, err := logaggc.New("")
	t.Assert(err, c.IsNil)
	opts := logagg.LogOpts{
		Follow:      true,
		StreamTypes: []logagg.StreamType{logagg.StreamTypeInit},
	}
	rc, err := client.GetLog(appID, &opts)
	t.Assert(err, c.IsNil)
	defer rc.Close()
	msgs := make(chan *logaggc.Message)
	stream := stream.New()
	defer stream.Close()
	go func() {
		defer close(msgs)
		dec := json.NewDecoder(rc)
		for {
			var msg logaggc.Message
			if err := dec.Decode(&msg); err != nil {
				stream.Error = err
				return
			}
			select {
			case msgs <- &msg:
			case <-stream.StopCh:
				return
			}
		}
	}()

	// run the OOM job
	cmd := exec.CommandUsingCluster(
		s.clusterClient(t),
		s.createArtifact(t, "test-apps"),
		"/bin/oom",
	)
	cmd.Meta = map[string]string{"flynn-controller.app": appID}
	runErr := make(chan error)
	go func() {
		runErr <- cmd.Run()
	}()

	// wait for the OOM notification
	for {
		select {
		case err := <-runErr:
			t.Assert(err, c.IsNil)
		case msg, ok := <-msgs:
			if !ok {
				t.Fatalf("message stream closed unexpectedly: %s", stream.Err())
			}
			t.Log(msg.Msg)
			if strings.Contains(msg.Msg, "FATAL: a container process was killed due to lack of available memory") {
				return
			}
		case <-time.After(30 * time.Second):
			t.Fatal("timed out waiting for OOM notification")
		}
	}
}